I\'m having some problems with the Sql query generated by LINQ, Since my environment is quite big, I did a simple example that reflects my problem.
I have a statement that looks like: QUERY A UNION QUERY B ORDER BY SomeColumn Query A and Query B each take a nominal amount of time to run, but when I put them in the UNION, it take 7-9 seconds wh
I have virtually the same join query, the difference between my ( >two ) queries being one of the tables on which the join is made. Performance-wise is it better to:
This is my first question here so please don\'t be tough on me... :P I usually tend to google my way to a solution but now I\'m in a hurry and have used up all the resources I had...
I have two query to filter some userid depend on question and its answers. Scenario Query A is (the original version):
Using php and mysql 5.x. I currently load a banner image in a certain section of my site like so: SELECT * FROM banners WHERE section = 1 AND pageid = 2
Simple question :D. I know how to do it, but I have开发者_运维百科 to do it fast. What’s the most time efficient method?
I am trying to improve a query which does the following: For every job, add up all the costs, add up the invoiced amount, and calculate a profit/loss. The costs come from several different tables, e.
Is there a way for me to see how MongoDB executed a query, i.e. which indexes it used, how many blocks it scanned, how much time that 开发者_开发技巧took, and so on?
How to create indexes on MQT(materialized query table) in Db2? I haven\'t found this information in documentation? Is 开发者_运维知识库indexcreation syntax the same as for common tables?After you crea
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